JEXONA Solar Power Auto Darkening Welding Helment 9X003 Color Silver Line Solar-powered welding helmet with auto-darkening filter switching from light to dark in 1/30000 sec with 4 premium sensors Super large window, 180 degree holographic Perspective! Large viewing area of 4-1/5"x2-1/2" with variable shade adjustment from #9 -#13 and a resting shade of #4 Cheater Lens / Magnifying Lens compatible design. Stepless Delay time and Sensitivity Adjustment. Welding/Grinding optional Widely applied in TIG/MIG/MAG/CO2/MMA/Plasma Cutting, especially in all kinds of High strength welding activities In conformance with CE, ANSI Z87.1, CSA Z94.3, AS/NZS standards